re: Penis Color: Why Penis Is Generally Black In Color?

Dark colored penis and scrotum is a usual finding. It is wrong that its due to masturbation. The darkness is genetically determined. Those people who live in temperate climate may get genetic changes accordingly and hence they have not quite fair skin. Also there genitals become darker. A pigment in our body known as Melanin makes our skin darker to prevent from infra red lights of the sun. It is proposed that this pigment releases more at the genitals making it darker. The reason is still not understood, however it is proposed that it releases due to hormonal actions. There are certain infections like fungal infections that also responsible for making genitals darker. If there is itching and white slough then should be consulted by the doctor in this regard.